"Problem" is overstated, because I don't actually think this team has had a "problem" beyond lacking a superstar and dealing with some key injuries. But the key issue last night beyond just being completely out of our league playing against the Warriors, is that our lineup is microscopic in size. You got 5'9 Ant Man at PG. You got 6'2 Bradley at SG. You got 6'4 French Fries at SF. 6'9 Amir Johnson playing Center... slightly offset by 7 foot Klynyk playing PF, but Klynyk has T-Rex arms. He has a wingspan of 6'9. That's a really really small lineup. In fact, that PG/SG/SF lineup might be the smallest in history... or at least since the 1950s. Can you think of a single modern basketball team that started a 5'9, 6'2 and 6'4 player together? I certainly can't. Less of a problem once Amir and Jae come back.
THIS^
Playing small with good size, and length at each position is one thing, playing tiny with undersized, non-physical players at every position is another thing.
To me "small ball" is having a stretch 4 & 5 on the floor to draw the opposing bigs away from the basket. Giving your hopefully quicker smalls a chance to get to the rim.
Not going so small you are at physical impairment, and getting manhandled.